MANILA, 26 April (PIA) – The Department of Public Works and Highways (DPWH) has utilized a new technology to raise the Ayala Bridge in San Miguel, Manila.
DPWH thru project contractor Frey-Fil Corporation/EEI Corporation Joint Venture adopted the new technology to raise the bridge freeboard clearance by .70 meters using strand jack technology, a heavy lifting system used worldwide to lift bridges, buildings and other structures.
Public Works and Highways Secretary Rogelio L. Singson said that the ongoing rehabilitation of Ayala Bridge superstructure and road approaches including retrofitting of its substructure is part of the department’s Urgent Infrastructure Development Project (UIDP), which aims to rehabilitate bridges that have long been non-conforming to current seismic code, hence are critically in-need of repair.
The ongoing rehabilitation works of the four lane steel truss-type Ayala bridge will also utilize two seismic engineering tools to ensure that the bridge will be earthquake-resistant: the high-damping rubber bearing and base isolation.
Likewise, installation of high-damping rubber (HDR) bearings will allow the bridge to absorb energy in case of lateral earthquake by transforming energy to heat while the use of base isolators is intended for the bridge to survive a devastating seismic impact by dividing the bridge’s fixed connections to substructures and placing roller bearing on sides of the bridge to make way for movement.
According to DPWH, rehabilitation cost is Php447.953 million.
Constructed in 1880 as Puente de la Convelecencia and underwent last major repair works in 1957, Ayala Bridge is being rehabilitated to maintain its original historical configuration.
Meanwhile, Ayala Bridge will be partly re-opened to light vehicles by middle of May 2015. (DPWH/RJB/JEG/PIA-NCR)
See more at: http://news.pia.gov.ph/article/view/241429863757/new-technology-used-for-ayala-bridge-rehab#sthash.f7pOkqEI.dpuf
0 Comments